As Askip said, Muerren (Mürren) is a wee way out of Interlaken. I have been searching in both German and English, but for the moment at least, I have drawn a complete blank on cheese makers actually in Matten bei Interlaken.

What about in Obermaiselstein? I am puzzled by the parachute co being from there.

I honestly don't think they have time to get to Germany. If you remember the cars seen in Salzburg had number plates from Stuttgart (where the Mercedes Factory is in Germany). It is possible that production could have done some creative rearranging, and hired the gear from Germany so they could do the para gliding in some remote location rather than using a commercial company in Interlaken itself...for that matter, the cheese could be a setup too

One thing that's bugging me is the lack of visible snow. Interlaken is in the valley of quite a mountainous area. In November, I would have expected there to be lots of snow on the surrounding peaks at least. Mr Shrek was working in Thun at the other end of the lake at the beginning of December a couple of years ago and has some spectacular photos. He was also passing thru Munich at the beginning of Dec 2008 - just a couple of weeks after this filmed - and there was ground level snow.All the cheese sites also talk about taking the cows up into the alps to eat the mountain grass in summer as the snow recedes, then descending to the valleys for the winter.

Did the teams split up? Nijjy saw teams on the western run (Domodossola>Spiez>Interlaken), and Boingo spotted the Munoz bros. on the eastern run (Bellinzona>Lucerne>Interlaken). System map here (430kb pdf).

Regarding the gory slime: at first, I thought they'd been involved in a Halloween event even though it was Nov. 3. Halloween is celebrated here but not like it is at home. They sell some "Scream" masks in the stores--that's about it. Anyway, my wife guessed that they could've been taking part in some local custom, maybe something with beer brewing or cheese making. BUT the woman in the car I first saw as well as the older man and woman whom we saw at Hellbrunn had the stuff on them in places you'd figure you would clean up right away, like on your face. It's almost as if they were made up like that and were expected to leave it on. But again, I have no proof. There was some slime on one of the cars that I passed by. I should've taken a sample! By the way, the team of two women appeared to have no slime on them whatsoever which would imply they had a choice in a previous activity. A Detour?

As I thought more about it today, I do remember a crew member saying something about climbing a mountain earlier in the day. Something how his team person saw arrows pointing downward, but she thought it was a trick, so she went back up the mountain. Again, that was a fleeting conversation and I may be messing up the details.

I haven't found anything yet, but the stone pattern seems to match better with Domodossola rather than any of the Locarno and Interlaken photos I've seen

Quote

when flocks of cameras and people got on in Domodossola, Italy.

Actually thats a very sharp eye you have there Mrs Shrek, the Piazza Domodossola match's great but the buildings don't match the chalet type in the photos but still very nice catch! But I have not seen all of Domodossola, yet ......

I haven't found anything yet, but the stone pattern seems to match better with Domodossola rather than any of the Locarno and Interlaken photos I've seen

Quote

when flocks of cameras and people got on in Domodossola, Italy.

Actually thats a very sharp eye you have there Mrs Shrek, the Piazza Domodossola match's great but the buildings don't match the chalet type in the photos but still very nice catch! But I have not seen all of Domodossola, yet ......

yeah the building behind her in this shot looks Swiss, and I can't find that damn pond/lake anywhere, but Italy was the best match on stones. Trouble is that it is in the south, and not at a very high elevation so unlikely to have ground snow fall (yes I'm obsessed with the snow). None of the other shots have ground snow except the boys crossing the pass in the train, and Salzburg was snow free too so it has to be somewhere alp-ish, although there the small possibility that it could be further on, Romania or even Siberia??